The veteran Canadian thesp told People magazine: "Terry [Gilliam] is throwing himself into the job of trying to salvage the picture."

He said the director was trying to work out how to continue on: "Fortunately, because the film deals with magic, there is a way, perhaps, of turning Heath into other people and then, using stills and I think they call it CGI."

Plummer added: "Terry was a very good friend [of Heath's]. He wants to go on with the movie, and I can very much understand why. Because he wants to dedicate it to Heath, of course."

Plummer has spoken about his late co-star's role in Imaginarium.

He described Ledger, who he last saw while filming scenes in London two weeks ago, as "in very high spirits. He was just enjoying himself tremendously. It's a rather fanciful script, and he was wonderful in this role."

The actor also said that Ledger was complaining that he was having trouble sleeping and "was taking all these pills to help him."

CGI has been used to posthumously complete actor's performances before, most famously when Oliver Reed was digitally recreated in Gladiator after he died midway through the shoot.

Should Gilliam use CGI to finish Ledgers scenes in the Imaginairum of Doctor Parnassus, or even release the film at all? Your thoughts please.